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Consider the following statements:
The difference between higher and lower heating values of the fuels is due to
1. Heat carried by steam from the moisture content of fuel.
2. Sensible heat carried away by the flue gases.
3. Heat carried away be steam from the combustion of hydrogen in the fuel.
4. Heat lost by radiation On these statements 
  • a)
    2, 3 and 4 are correct
  • b)
    1 and 2 are correct
  • c)
    3 alone is correct
  • d)
    1, 2, 3 and 4 are correct
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:The difference between higher and lo...
2 is wrong therefore correct choice will be (c)
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Most Upvoted Answer
Consider the following statements:The difference between higher and lo...
Explanation:

The higher heating value (HHV) and lower heating value (LHV) of a fuel are measures of the energy content of the fuel. The HHV represents the total amount of heat released when a fuel is completely burned, including the heat released by condensing the water vapor formed during combustion. The LHV, on the other hand, does not include the heat released by condensing the water vapor.

Statement 1: Heat carried by steam from the moisture content of fuel.
- This statement is not correct. The difference between HHV and LHV is not due to the heat carried by steam from the moisture content of fuel. Moisture content affects the energy content of the fuel, but it does not account for the difference between HHV and LHV.

Statement 2: Sensible heat carried away by the flue gases.
- This statement is not correct. Sensible heat carried away by the flue gases is not the primary reason for the difference between HHV and LHV. Flue gases do carry away some heat, but this heat is accounted for in both HHV and LHV calculations.

Statement 3: Heat carried away by steam from the combustion of hydrogen in the fuel.
- This statement is correct. The combustion of hydrogen in the fuel produces water vapor, and the heat released by condensing this water vapor is not included in the LHV calculation. Therefore, the combustion of hydrogen contributes to the difference between HHV and LHV.

Statement 4: Heat lost by radiation.
- This statement is not correct. Heat lost by radiation is not the primary reason for the difference between HHV and LHV. While there may be some heat lost by radiation, this heat loss is accounted for in both HHV and LHV calculations.

Therefore, the correct answer is option C: Statement 3 alone is correct. The difference between HHV and LHV is primarily due to the heat carried away by steam from the combustion of hydrogen in the fuel.
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Consider the following statements:The difference between higher and lower heating values of the fuels is due to1. Heat carried by steam from the moisture content of fuel.2. Sensible heat carried away by the flue gases.3. Heat carried away be steam from the combustion of hydrogen in the fuel.4. Heat lost by radiation On these statementsa)2, 3 and 4 are correctb)1 and 2 are correctc)3 alone is correctd)1, 2, 3 and 4 are correctCorrect answer is option 'C'. Can you explain this answer?
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